Water pollution detection sampler

The utility model relates to the technical field of water pollution detection, in particular to a water pollution detection sampler which is slidably mounted on a sampling seat through a conical rod, a movable seat is slidably mounted on the sampling seat through an adjusting device, a support frame is fixedly mounted on the movable seat, a rectangular groove is formed in the support frame, and a movable rod is slidably mounted on the support frame. A circular groove is formed in the side, close to the rectangular groove, of the moving seat, the moving rod penetrates through the circular groove, the sampling barrel is in threaded connection with the moving rod, the caliper is fixedly installed on the moving rod, and the limiting assembly is installed on the supporting frame. Meanwhile, the descending depth of the sampling barrel is observed through the caliper on the moving rod, the depth of the sampling barrel is controlled, and the movement of the moving rod can be limited through the limiting assembly, so